<!DOCTYPE html>
<html lang="zh-CN">

<head>
  <meta charset="utf-8">
  <meta http-equiv="x-ua-compatible" content="ie=edge">
  <title>第二课堂</title>
  <script type="text/javascript" src="../static/js/jquery.min.js"></script>
  <script type="text/javascript" src="../static/js/script.js"></script>
  <script type="text/javascript" src="../static/js/template.js"></script>
  <link rel="stylesheet" href="../static/font-awesome-4.7.0/css/font-awesome.min.css">
  <link rel="stylesheet" href="../static/css/style.css">
  <style>
    .active {
      color: #F38D07;
    }

    .maincontent {
      margin-top: 70px;
      margin-bottom: 70PX;
    }

    .toup {
      display: none;
      cursor: pointer;
      position: fixed;
      width: 60px;
      height: 60px;
      right: 50px;
      bottom: 100px;
    }

    .toup img {
      width: 100%;
    }

    .title {
      font-size: 20px;
      font-family: Source Han Sans CN;
      font-weight: 400;
      line-height: 34px;
      color: rgba(121, 121, 121, 1);
      opacity: 0.9;
      margin-bottom: 90px;
    }

    .main-title {
      display: flex;
      justify-content: center;
      align-items: center;
      font-size: 30px;
      font-family: Source Han Sans CN;
      font-weight: 500;
      line-height: 51px;
      color: rgba(68, 68, 68, 1);
      opacity: 1;
      margin-bottom: 28px;
    }

    .date {
      display: flex;
      justify-content: center;
      align-items: center;
      font-size: 14px;
      font-family: Source Han Sans CN;
      font-weight: 300;
      line-height: 20px;
      color: rgba(153, 153, 153, 1);
      opacity: 1;
      margin-bottom: 53px;
    }

    .text1 {
      display: flex;
      justify-content: center;
      align-items: center;
      text-indent: 25px;
      font-size: 14px;
      font-family: Source Han Sans CN;
      font-weight: 300;
      line-height: 20px;
      color: rgba(68, 68, 68, 1);
      opacity: 1;
    }

    .now {
      display: flex;
      justify-content: center;
      align-items: center;
      width: 170px;
      height: 44px;
      text-align: center;
      font-size: 30px;
      font-family: serif;
      font-weight: 400;
      line-height: 51px;
      color: rgba(255, 255, 255, 1);
      opacity: 1;
      background-color: #9EBF3C;
      padding: 5px 25px;
      border-radius: 25px; 
      box-sizing: border-box;
    }

    .top {
      display: flex;
      justify-content: space-around;
      padding: 50px 0;
      font-weight: 300;
      line-height: 51px;
      opacity: 1;
      font-size: 30px;
      color: #444;
      cursor: pointer;
      font-family: serif;
    }
    .top div{
      width: 200px;
      text-align: center;
    }

    .main_box {
      width: 100%;
      display: flex;
      justify-content: flex-start;
      flex-wrap: wrap;
      margin-bottom: 100px;

    }

    .item {
      width: 285px;
      height: 238px;
      display: flex;
      flex-direction: column;
      margin-bottom: 50px;
      margin-right: 15px;
    }

    .second_title {
      font-size: 18px;
      font-family: Source Han Sans CN;
      font-weight: 400;
      line-height: 31px;
      color: rgba(68, 68, 68, 1);
      opacity: 1;
      text-align: center;
      padding: 10px 0;
    }

    .second_describle {
      display: flex;
      justify-content: space-between;
      font-size: 14px;
      font-family: Source Han Sans CN;
      font-weight: 400;
      line-height: 24px;
      color: rgba(153, 153, 153, 1);
      opacity: 1;
      padding: 0 10px;
    }
    i{
     padding-top: 5px;
    }
    .page_change {
      display: flex;
      justify-content: center;
      margin: 30px 0;

    }

    .page_item {
      width: 32px;
      height: 32px;
      background: rgba(158, 191, 60, 1);
      opacity: 1;
      color: #fff;
      display: flex;
      justify-content: center;
      align-items: center;
      margin-right: 20px;
    }
    .page_item_no{
      width: 32px;
      height: 32px;
      background-color: #eee;
      opacity: 1;
      color: #000;
      display: flex;
      justify-content: center;
      align-items: center;
      margin-right: 20px;


    }
    .page_item_text{
      width: 60px;
      height: 32px;
      background-color: #eee;
      opacity: 1;
      color: #000;
      display: flex;
      justify-content: center;
      align-items: center;
      margin-right: 20px;
      margin-left: 20px;


    }
  </style>
</head>

<body>
  <div class="wrapper">
    <div class="header headerbs">
      <div class="glogo"></div>
      <div class="nav">
        <div onclick="window.location.href='../index/index.html?type=index'">首页</div>
        <div onclick="window.location.href='../resources/index.html?type=online'">资源在线</div>
        <div class="active">班主任工作</div>
     
        <div onclick="window.location.href='../classroom/index.html?type=classroom'">德育讲堂</div>
        <div onclick="window.location.href='../activity/index.html?type=activity'">活动专区</div>
      </div>
    </div>
    <div class="maincontent">
      <div class="top">
        <div onclick="window.location.href='./index.html?type=teacher'">主题班会</div>
        <div onclick="window.location.href='./board-report.html?type=teacher'">板报</div>
        <div class="now">第二课堂</div>
        <div onclick="window.location.href='./contact.html?type=teacher'">活动交流</div>
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      <div class="main_box">
        <div class="item">
          <a href="./second_detail.html?type=teacher">
              <img src="../static/img/second_class.png" alt="">
              <div class="second_title">这是一个视频标题，单行显示</div>
              <div class="second_describle">
                <div>视频简介，不超过15个字… </div>
                <i class="fa fa-youtube-play"></i>
              </div>
          </a>
         
        </div>
        <div class="item">
            <a href="./second_detail.html?type=teacher">
                <img src="../static/img/second_class.png" alt="">
                <div class="second_title">这是一个视频标题，单行显示</div>
                <div class="second_describle">
                  <div>视频简介，不超过15个字… </div>
                  <i class="fa fa-youtube-play"></i>
                </div>
            </a>
           
          </div>

          <div class="item">
              <a href="./second_detail.html?type=teacher">
                  <img src="../static/img/second_class.png" alt="">
                  <div class="second_title">这是一个视频标题，单行显示</div>
                  <div class="second_describle">
                    <div>视频简介，不超过15个字… </div>
                    <i class="fa fa-youtube-play"></i>
                  </div>
              </a>
             
            </div>

            <div class="item">
                <a href="">
                    <img src="../static/img/second_class.png" alt="">
                    <div class="second_title">这是一个视频标题，单行显示</div>
                    <div class="second_describle">
                      <div>视频简介，不超过15个字… </div>
                      <i class="fa fa-youtube-play"></i>
                    </div>
                </a>
               
              </div>

              <div class="item">
                  <a href="">
                      <img src="../static/img/second_class.png" alt="">
                      <div class="second_title">这是一个视频标题，单行显示</div>
                      <div class="second_describle">
                        <div>视频简介，不超过15个字… </div>
                        <i class="fa fa-youtube-play"></i>
                      </div>
                  </a>
                 
                </div>

                <div class="item">
                    <a href="">
                        <img src="../static/img/second_class.png" alt="">
                        <div class="second_title">这是一个视频标题，单行显示</div>
                        <div class="second_describle">
                          <div>视频简介，不超过15个字… </div>
                          <i class="fa fa-youtube-play"></i>
                        </div>
                    </a>
                   
                  </div>

                  <div class="item">
                      <a href="">
                          <img src="../static/img/second_class.png" alt="">
                          <div class="second_title">这是一个视频标题，单行显示</div>
                          <div class="second_describle">
                            <div>视频简介，不超过15个字… </div>
                            <i class="fa fa-youtube-play"></i>
                          </div>
                      </a>
                     
                    </div>
                    <div class="item">
                        <a href="">
                            <img src="../static/img/second_class.png" alt="">
                            <div class="second_title">这是一个视频标题，单行显示</div>
                            <div class="second_describle">
                              <div>视频简介，不超过15个字… </div>
                              <i class="fa fa-youtube-play"></i>
                            </div>
                        </a>
                       
                      </div>
          
                      <div class="item">
                          <a href="">
                              <img src="../static/img/second_class.png" alt="">
                              <div class="second_title">这是一个视频标题，单行显示</div>
                              <div class="second_describle">
                                <div>视频简介，不超过15个字… </div>
                                <i class="fa fa-youtube-play"></i>
                              </div>
                          </a>
                         
                        </div>
          
                        <div class="item">
                            <a href="">
                                <img src="../static/img/second_class.png" alt="">
                                <div class="second_title">这是一个视频标题，单行显示</div>
                                <div class="second_describle">
                                  <div>视频简介，不超过15个字… </div>
                                  <i class="fa fa-youtube-play"></i>
                                </div>
                            </a>
                           
                          </div>
          
                          <div class="item">
                              <a href="">
                                  <img src="../static/img/second_class.png" alt="">
                                  <div class="second_title">这是一个视频标题，单行显示</div>
                                  <div class="second_describle">
                                    <div>视频简介，不超过15个字… </div>
                                    <i class="fa fa-youtube-play"></i>
                                  </div>
                              </a>
                             
                            </div>
          
                            <div class="item">
                                <a href="">
                                    <img src="../static/img/second_class.png" alt="">
                                    <div class="second_title">这是一个视频标题，单行显示</div>
                                    <div class="second_describle">
                                      <div>视频简介，不超过15个字… </div>
                                      <i class="fa fa-youtube-play"></i>
                                    </div>
                                </a>
                               
                              </div>
            

      </div>
      <div class="page_change">
          <a href=""> <div class="page_item">1</div></a>
          <a href=""> <div class="page_item_no">2</div></a>
          <a href=""> <div class="page_item_no">3</div></a>
          <a href=""> <div class="page_item_no">4</div></a>
          <a href=""> <div class="page_item_no">5</div></a>
         
          <div >...</div>
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              <a href=""> <div class="page_item_text">下一页</div></a>
            
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  <div class="toup">
    <img src="../static/img/up.png" alt="">
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<script>
  $(function () {
    $(window).scroll(function () {
      var scrollHeight = $(document).scrollTop();
      if (scrollHeight > 1000) {
        $(".toup").fadeIn();
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    $(".toup").click(function () {
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